Evaporator



C. F. BRAUN.

EVAPORATOR.

APPLICATION FILED sEPT. 4, IQIII,

Patented Mar. 16, 1920.

3 SHEETSSHEET l.

C.F.BRAUN.

` EvAPoRAToR. APPLICATION FILED SEPT. 4| 1918.

Paiented.ar.16,192l

3 SHEETS-SHEET 2.

C. F. BRAUN.

EvAPoRAToR.

APPLlCATON FILED SEP-[2.4. 1918- 1 ,334,014. Patented Miu'. 16, 1920.

3 SHEETS-SHEET 3.

CARL BRAUN, OF SAN FRANCISCO, CALIFORNIA.

EVAPORATOR.

p Specification of Letters Patent.

Patented Mar. v16, 1920.

Application `tiled SeptemberJl, 1918. Serial No. 252,641.

To all whom it may concern:

Be it known that I, CARL F. BRAUN, a citizen of the United States,residing at the city and county of San Francisco and State ofCalifornia, have invented new and useful Improvements in Evaporators, ofwhich the following is a specification.

This invention relates to an evaporator, and particularly pertains to anapparatus for producing salt Water vapor.

In most common forms of evaporators it has been found that the heatingsurface could not \be uniformly distributed over the disengaging surfacewith the `result that localized priming would occur; that anobjectionably large shell is i required for accommodating a suflicientheating surface for practical results; and, furthermore, that the coilsinstalled within the shell are usually so formed as to prevent properdraining thereof. With these objections in view it is the Object of thepresent invention to provide an evaporator` the coils of which aresimple in construction and may be readily drained and are furtherarranged within a suitable shell to prevent localized priming and alsoto permit a compact and conveniently designed apparatus to be produced.It is another object of this invention to provide permanent connectionsfor the induction and eduction pipes upon the shell of the apparatuswhich will permit the door of the shell and the coilstobe removed as aunit without molesting these pipes and allowing their connections withthe coils to be automatically broken with the removal of said door.A

The present invention contemplates the provision of an evaporator havingtwo main castings, the shell and the door, the door being removable andcarrying condensation coils in a-manner to establish communicationbetween them and the steam and condensate manifolds when the door isclosed.

The invention is illustrated by way of example in the accompanyingdrawings, in wh1ch Figure 1 is a view in front elevation illustratingthe completely assembled apparatus.

Fig. 2 is a view .in sido elevationl illust-rating the device as shownin Fig. 1 and withl parts of the shell 'broken away to more clearlydisclose the arrangement of the coils therein. g

Figj is a view in horizontal section illustrating the formation of theshell, the permanent connections for the steam and conedge.

densate manifolds and the arrangement of the coils in relation to thedoor of the shell and the manifolds.

Referring more particularly to the drawings, 10 indicates an outer shellforming the body. portion of the present structure. This shell issubstantially cylindrical in horizontal section having an enlarged lowerportion through which a door opening 11 is formed. The upper portion ofthe shell is reduced and forms a dome. Mounted upon one side Aof thisdome is a relief valve 12, and upon another portion of the dome aresuitable gages 13. The top of the dome is formed with a tubular pipeextension 14 at the outer end of which a vertical bolting iiange 15 isprovided.

Formed integral with the sides of the shell and opposite the door is 'aninlet passageway 16 and an outlet passageway 17. These passageways aredisposed, thel former at the upper side of the door and the latter nearthe lower ed e of the door. These passageways extend forwardly and areadapted to register with an inlet manifold 18r and an outlet manifold 19formed in the bod of the removable door 20. These manifo d passagewa-ysare provided with a plurality of out-lets 21, to which the opposite endsof coils 22 are fastened. The formation of these coils is particularlyshown in Fig. 3, whe-re it will be seen that they have a series ofconcentric convolutions ending in an eccentric convolution leading `tothe manifold passageway 19. Further examination of Fig. 1 will show thatthe coils are inclined ina general direction from the top to the bott-omof the shell and thus insure that they will properly drain'into themanifold, thereby adding greatly to the heat transmitting properties ofthe coils. f

The marginal edge of the openin around the door and the shell is formedwit an outwardly extending bolting flange 23, which has a plurality ofopen-ended slots in. its This fiange 'corresponds in contour t0 that ofthe door, which also has slots adapted to register withthose upon theshell flange to receive clampingbolts 24. 'It is to be noted that thereare two pcrforations shown through the flanges which are not slotted, asindicated at A and B inFig. 1. These perforations are provided toreceive boltsl which will temporarily hold the door 1n. lacewhile'permitting the other bolts to be astened within the slots. Thelower porbottom of the shell and is threaded to receive a sea water pipe29. This pipe, as shown, extends horizontally beneath the coils 22 andis provided with a number of perforations through which the water maypass into the shell.a The bottom lof the shell is also formed with adrain opening 30. It will be understood that the openings 28 and 29 arealso provided with bolting flanges to which suitable conduits may beconnected. lf desired, the shell may be fitted with a salinometer 31,which is particularly shown in rig. s. f

yas

In operation, thevsalt water is admitted through the pipe 29 and isallowed to circulate upwardly around the coils 22. These coils receivesteam which passes inwardly through the passageway 16 and is then distributed along the manifold 19 and thereafter allowed to pass outwardlythroughthe upper ends of all of the coils connected with this manifold.This steam circulates around through the coils and downwardly to theoutlets thereof and into the manifold 19. As before stated, thecondensed steam will also pass into this manifold. As this manifoldextends vertically and has its outlet at the lower end thereof. thesteam and condensed liquid will flow outwardly through the passageway 17and thereafter be carried away through any pipe connection desired.

The heat of the coils will be imparted to the liquid in which they aresubmerged and this liquid will thereafter be vaporized,.said

. vapor passing off through the dome of the shell and outwardly throughthe outlet pipe 14. During this operation the relief valve, gages andthe salinometer will function in their customary manner to .indicate thecondition withinuthe shell.

When it is desired to remove the coils for anyl reason the'bolts 24 areremoved-from their clamping position through the flange of the door andthe flange of the shell and thereafter thev door vis drawn outwardly asit rests upon the casters 27. lngorder that v4the" casters shallproperly registerwith the" -floor washers 26 may be interposed betweenthe outer lugs 25 and the shoulders of the caster frames to vary theposition of the caster wheels'in relation to the shell. As the door-ispulledv outwardly and is rolled upon thecastersthe manifolds -18 and 19will be simultaneously disconnected from the inlet and outletpassageways 16 and 17 `and the These brackets y v Lessors coils will bemoved bodily without in any way molesting their connections.

rlhe rear sides of the lowermost coils are bound together with an angleplate 32 which has strap hooks 33 engaging the outer coil convolutions.This angle plate has a horizontally extending portion which projectsbeneath the set of coils and is turned upwardly at its forward end. Thisportion cooperates with a fiat rib 34 formed integral with the bottom ofthe shell, as particularly shown in Figs. 2 and 3.' The forward end ofthis rib is inclined downwardly and provides a. supporting slide forholding up the coils as they are drawn out from the tank or replacedtherein. When the coils are to be replaced they are assembled upon thedoor and are then guided through the opening 11 into the shell. The doorwill thereafter register with the shell and the communicatingpassageways from the `manifo`lds will properly register with thepassageways 16 and 17. In this position the bolts located at A and B inlig. l `may be placed in position and tightened, after which theremaining bolts required to firmly secure the door are applied.

It will thus be seen that the structure here disclosed provides amaximum coil heating surface disposed within a shell of smalldimensions, and, furthermore, that the coils may be readily removedwithout molesting any of the inlet or outlet pipes of the apparatus.

While l have shown the preferred form of my invention as now known tome, I wish it understood that various changes in the construction,combination and arrangement of parts employedv may be made by thoseskilled in the art without departing from the spirit of my invention asclaimed. 'i

Having thus described my invention, what l claim and desire to secure byLetters Patcation with said manifolds.

lli

2. kln an evaporator having av shell and an opening in the side thereof,around which a bolting flange is secured, a door adapted to be bolted tosaid flange and to close the opening in the shell, separate steam andcondensate manifolds formed in the opposite sides thereof as a part ofthe door, heating coils xed by their opposite ends to the door and incommunication with said manifolds, said coils being horizontallydisposed and adapted so that the eduction ends of each coil may beconnected to the condensate manifold at a lower level than the inductionend thereof, whereby the coils are properly drained.

3. In an evaporator, a heating coil consisting of a ipe forming a seriesof -concentric convo utions one within the other followed by aneccentric convolution whereby a distribution of the heating surface ofthe coils will be obtained and the induction opening of the pipe will bedisposed at a higher level than the eduction opening, and the entirelength of pipewill be inclined 1n a downwardly direction from theinduction to the eduction opening thereof.

4. In an evaporator, a heating coil consisting of a pipe forming aseries of concentric convolutions one within the other followed by aneccentric convolution whereby a distribution of the heating surface ofthe coils will be* obtained and the induction opening of the pipe willbe disposed at a. higher level than the eduction opening, and the entirelength of pipe will be inclined in a downwardly direction from theinduction to the eduction opening thereof, a door to which a series ofsaid pipes are secured, and parallel vertical steam and condensatemanifolds with which the induction and eduction ends of thel pipe are inrespective communication.

5. In an evaporator, a vheating coil consisting of a pipe forming aseries of concentric convolutions one within the A other followed by aneccentric convolution whereby a distribution of the heating surface ofthe coils will be obtained and the induction opening of the pipe will bedisposed at a higher level than the eduction opening, and the entirelength of pipe will be inclined in a downwardly direction from theinduction to the eduction opening thereof, a door to which a series ofsaid pipes are secured, parallel vertical steam and condensate manifoldsin the sides of said door with which the induction and eduction ends ofthe pipe are lin respective communication, said steam manifold having.an inlet at its upper end, and the condensate manifold having an outletat its lower end, and permanent passageways upon the shell of theevaporator with which said inlet and outlet passageways may be broughtto register when the door is closed.

6. In an eva orator, va heating coil consisting of a pipe orming aseries of concentric convolutions, one within the other, followed by aneccentric convolution, whereby a distribution of the heating surface ofsaid coils will be obtained, and the induction opening of the pipe willbe disposed at a hi her level than the eduction opening and t e entirelengthof the pipe will be inclined in a downwardly direction from theinduction to the eduction opening thereof, and supporting meansinterposed between each separate coil to hold the same in proper levelfor draining, a door to which a series of said pipes are secured,parallel vertical steam and condensate manifolds in the sides of saiddoor with which the induction and eduction ends of the pipe are inrespective communication, said'steam manifold' having an inlet at itsupper end and the condensate manifold having an outlet at its lower end,and permanent passageways upon the shell of theevaporator upon whichsaid inlet and outlet assageways may be brought to register w en thedoor is closed.l

7.- In an evaporator having an outer shell with a door opening in theside wall thereof, a door plate adapted to be secured over said opening,a plurality of super-imposed heating coils carried by the door andadapted to be projected into the shell, casters fixed to the door tosupport the weight thereof when it is removed from the shell, supportingmeans to hold the outer coil convolutions in spaced relation with oneanother, said supporting means having a runner, and a Hat rib formed onthe bottom of the shell upon which said runner is adapted to slide asthe coils are drawn into and out of the shell.

8. In an evaporator having an outer shell with a door opening in theside wall thereof, a door plate adapted to be secured over said opening,a plurality of super-imposed 'heating coils carried by the door andadapted to be projected into the shell, casters fixed to the door tosupport the weight thereof when it is removed from the shell, supportingmeans to hold the outer coil convolutions in spaced relation with oneanother, said supporting means having a runner and a flat rib formed onthe bottom of the shell inclined toward the opening of the shell, uponwhich said runner is adapted to slide as the coils are drawn into andout of the shell.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses. v

CARL F. BRAUN. Witnesses:

JOHN H. HERRrNG, JAMES M. ABBETT,

